Thank you for your query. Your description points an abscess/ an infected hair follicle . I would examine the site to look for signs of infection, redness in the surrounding areas (skin, subcutaneous tissue), warmth over the area, tenderness, any possible bite/sting marks, hair follicle in the centre. I would do a complete blood count to check for levels of white blood cells in comparison with others. A folliculitis will be about 2-5mm in size. An abscess, in most cases is larger (1-5 cms). If there is adjacent skin involvement (redness, pain, warmth, fever) cellulitis could be present (unlikely based on your description). I would advice to keep area, clear & dry. Since it has been two weeks and seems to have pus (white center), I suggest a topical antibiotic cream twice a day for 1 weel or till it resolves. Do not pop it or squeeze it. If the antibiotic cream does show inprovement in 3 days, or is signs of cellulitis develop, I suggest you show it to a physician. hope this helps. please get back to us for further clarification. hope this resolves quickly. Wish you good health